光谱学与光谱分析 |
|
|
|
|
|
Anomalous Absorption and a Qualified Far Infrared Spectrum |
HU Yan-qin1, CHEN Yu-jing1, LI Hui-hua2, WANG Hai-shui1* |
1. School of Chemistry & Chemical Engineering, South China University of Technology, Guangzhou 510640, China 2. Modern Analytical Center, Shantou University, Shantou 515063, China |
|
|
Abstract The ideal 100% line could not be obtained when the content of water vapor in the spectrometer is constant but high during the whole procedure of a far-infrared spectrum collection. This result indicates that anomalous absorption phenomenon takes place in high relative humidity atmosphere. In the present paper,the influences of the relative humidity of ambient air and spectral resolution on anomalous absorption were studied. It was found that both decreasing the water vapor content in the spectrometer and adopting low spectral resolution are effective methods to avoid anomalous absorption. Furthermore,the water vapor bands can be eliminated by “dry air and wet air titration” in the fluctuant humidity. This provides us a quick and economic method to obtain a qualified far infrared spectrum conveniently. It should be noticed that the working condition for “dry air and wet air titration” is low relative humidity to prevent water vapor abnormal absorption.
|
Received: 2011-05-03
Accepted: 2011-08-29
|
|
Corresponding Authors:
WANG Hai-shui
E-mail: wanghsh@scut.edu.cn
|
|
[1] Griffths P R, Far-Infrared Spectroscopy, Chalmers J C and Griffiths P R Eds.; Handbook of Vibrational Spectroscopy; John Wiley & Sons: Chichester, JK., 2002: 229. [2] Kidchob T, Malfatti L, Marongiu D, et al. Journal of Sol-gel Science and Technology, 2009, 52: 356. [3] Vahur S, Teearu A, Leito I. Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 2010, 75: 1061. [4] Brusentsova T N, Peale R E, Maukonen D, et al. American Mineralogist, 2010, 95: 1515. [5] Kendixl E L, Prati S, Mazzeo R, et al. Far-Infrared Spectroscopy in the Field of Cultural Heritage. Patent. 2010, 7: 8. [6] Falconer R J, Zakaria H A, Fan Y Y, et al. Applied Spectroscopy, 2010, 64(11): 1259. [7] Prati S, Sciutto G, Mazzeo R, et al. Analytical and Bioanalytical Chemistry, 2010, 399(9): 3081. [8] Weis D D, Ewing G E. Analytical Chemistry, 1998, 70(15): 3175. [9] YANG Yan-hua,LI Hui-jing,WANG Hai-shui(杨燕花, 李慧晶, 王海水). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2011, 31(8): 2086. [10] WENG Shi-fu(翁诗甫). Fourier Transform Infrared Spectroscopy(傅里叶变换红外光谱). Beijing: Chemical Industry Press(北京:化学工业出版社), 2009. 109. [11] Lu T H, Chen C C. Measurement, 2007, 40: 591. [12] Chen Y J, Wang H S, Umemura J. Applied Spectroscopy, 2010, 64(10): 1186. [13] YANG Yan-hua,HU Yan-qin,WANG Hai-shui, et al(杨燕花,胡燕琴,王海水, 等). Chinese Journal of Analytical Chemistry(分析化学), 2010, 38(12): 1828.
|
[1] |
LIU Hong-yuan1, WU Bin1, 2, JIANG Tao3, YANG Yan-zhao1, WANG Hong-chao1, LI Jing-song1. Study on the Measurement of Absolute Spectral Responsivity of Terahertz Detector[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(04): 1017-1022. |
[2] |
PENG Wei, YANG Sheng-wei, HE Tian-bo, YU Ben-li, LI Jin-song, CHENG Zhen-biao, ZHOU Sheng*, JIANG Tong-tong*. Detection of Water Vapor Concentration in Sealed Medicine Bottles Based on Digital Quadrature Phase-Locked Demodulation Algorithm and TDLAS
Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 698-704. |
[3] |
YANG Tian-hang 1, 2, 3, GU Ming-jian1, 2*, HU Xiu-qing4, WU Chun-qiang4, QI Cheng-li4,SHAO Chun-yuan1, 2. Tropospheric 3D Winds Measurement Based on Cross-Platform Infrared Hyperspectral Observation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(04): 1131-1137. |
[4] |
TAN Min1, 2, 3, WANG Bang-xin1, 2, 3*, ZHUANG Peng1, 2, 3, ZHANG Zhan-ye1, 2, 3, LI Lu1, 2, 3, CHU Yu-fei1, 2, 3, XIE Chen-bo1, 2, WANG Ying-jian1, 2. Study on Atmospheric Temperature and Water-Vapor Mixing Ratio Based on Raman Lidar[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(05): 1397-1401. |
[5] |
ZHENG Xu-gang1, 2, SONG Dan-dan1, 2, ZHAO Su-ling1, 2, QIAO Bo1, 2, SHEN Chong-yu3, XU Zheng1, 2*. Effect of Water Vapor Treatment on the Performance of Quantum Dot Light-Emitting Diodes[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(04): 1034-1039. |
[6] |
GU Xiao-qin, PANG Hong-xi*, LI Ya-ju, ZHANG Wang-bin, WANG Jia-jia. Study on Calibration Method for Atmospheric Water Vapor Stable Isotopes Observed by Cavity Ring-Down Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(06): 1700-1705. |
[7] |
ZHANG Shang-lu1, 2, HUANG Yin-bo1, LU Xing-ji1, 2, CAO Zhen-song1, DAI Cong-ming1*, LIU Qiang1, GAO Xiao-ming1, RAO Rui-zhong1, WANG Ying-jian1. Retrieval of Atmospheric H2O Column Concentration Based on Mid-Infrared Inter-Band Cascade Laser Heterodyne Radiometer[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(04): 1317-1322. |
[8] |
ZHAO Qiang, DENG Shu-mei, LIU Chang-yu, SHU Ying, LI Wei-hua, YANG Wan-qing. Simultaneous Retrieval of Atmospheric Profiles, Surface Temperature and Surface Emissivity in Different Types of Earth Surface Using Hyperspectral Infrared Satellite Data[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(03): 693-697. |
[9] |
HONG Guang-lie1, LI Jia-tang2, KONG Wei1*, SHU Rong1. Summarization of Differential Absorption Liadr for Profiling Atmospheric Water Vapor Overseas[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(02): 340-348. |
[10] |
WANG Xin1, 2, Lü Shi-long2, CHEN Xia3. Automatic Algorithm for Water Vapor Compensation of Gas Spectra Through Iterative Least Square Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(01): 20-25. |
[11] |
SHI Dong-chen,HUA Deng-xin*,LEI Ning, GAO Fei, WANG Li, YAN Qing, ZHOU Yi. Research of Solar-Blind Ultraviolet Raman Lidar for Water Vapor Measurement Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1430-1436. |
[12] |
YU Min-xing1, WANG Hai-shui1*, ZHANG Yun-hong2*. Limitations of Spectral Subtraction in the Elimination of Infrared Water Vapor Bands[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(06): 1673-1677. |
[13] |
ZHOU Sheng1, 2, HAN Yan-ling1, LI Bin-cheng1, 3* . Trace Moisture Measurement with 5.2 μm Quantum Cascade Laser Based Continuous-Wave Cavity Ring-Down Spectroscopy [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(12): 3848-3852. |
[14] |
ZHANG Tian-long1, WEI Jing1*, GAN Jing-min1, ZHU Qian-qian2, YANG Dong-xu2 . Precipitable Water Vapor Retrieval with MODIS Near Infrared Data [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(08): 2378-2383. |
[15] |
ZHANG Yun, PANG Shu-feng, ZHANG Yun-hong* . A Relative Humidity Pulse Approach to Observe Mass Transfer Processes Controlled by Bulk and Surface for Aerosols[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(03): 887-889. |
|
|
|
|